Installation:
Copy the .ms file to the scripts\startup folder and restart Max. The modifier is found in the modifier list.

Tips:
($.modifiers[1].rollouts())[1]
Assuming that PEN_attributeHolder is the first modifier in the stack this will return the Presets rollout. You can use createDialog to open it as a floating window. PEN_AttributeHolder can't be displayed in the modifier stack at the same time because the rollout can't be created twice.

Name: Name of a new preset to be created.
Add: Set the spinners and sliders to the value you want to create a preset for, type a name in the Name field and then press Add. A new preset will show up in the presets list.
Delete Selected Preset: Select the preset from the Presets list and press Delete.
Delete All Presets: Deletes all the presets for the modifier.
Save: Saves all the presets to a text file.
Load: Loads presets from a text file over writing the originals. Note: This works based on the order of the CA's on the modifier and not by their names.
Merge: Merges presets from a text file with existing presets. Note: It is possible to create duplicate names with different settings.
Presets: This is a list of all presets and when one is chosen from the list all the attributes will be updated to the preset value.

Ramp: This is a new feature in v2.05, it allows for the values of the presets to be ramped up and used at any point. The green button is a toggle for this feature incase you want to have it work in an absolute fashion. Select a preset and ramp the slider from 0 to 100 to get a gradual result for the preset.

Key All: Keys all attributes added to the modifier.
Reset All: Resets all attributes on the modifier to a value of 0.
Copy: Copies the existing values of the CA's to the buffer.
Paste: Pastes the buffer back to the CA's. This is great for copying and pasting a pose from one hand to another.

Finds modifiers in your scene based on class name of modifiers. It has some defaults added to a drop down list but you can type in your own.
However, first you need to know the class name of the modifier that you are looking for.

This was a quick hack but it works.

Macro script category:PEN_Tools

Align To:
Local: Aligns new point helpers to the selected objects pivot.
Parent: Aligns new point helpers to the parent objects pivot for the selected object.
World: Aligns new point helpers to the world center.
Selection Center: Aligns new point helpers to the center of all selected objects.

Affects:
Group Each Object: Creates a point helper for each object that is selected.
Group All Objects: Creates a single point helper for all the objects that are selected. If Local is selected in the Align To options the local pivot of the most parent object will be used. If there are multiple most parent objects the pivot will be set to Selection Center instead.

Creation Display:
Hide Group Point Helpers: On creation of a new point helper the display properties of the point will be turned off but the point will not be hidden.
Show Group Point Helpers: On creation of new point helpers the points will be displayed.

Post Display:
Selected Only: Only affect currently selected point helpers.
Point Size: Sets the size of the point helpers when they are displayed.
On: Turns on display of point helpers, as well as unhides the point helpers if hidden in the Max interface. There is a macro provided for the same function.
Off: Turns off the display of point helpers. There is a macro provided for the same function.

Group:
Group: Groups the selected objects using point helpers as the node. This retains the hierarchy of the objects unless the Group All Objects option is selected where all objects are linked to the single group helper that is created. There is a macro provided for the same function.
Ungroup: Deletes any selected point helpers and retains the hierarchy of the objects. There is a macro provided for the same function.

Installation:
There are two scripts that ship with this tool. mGroupMacros.mcr is the macro scripts and should be placed in 3DSMax/UI/Macroscripts folder. mGroup.ms is the struct that contains all the functions to run "M" Group and should be placed in 3DSMax/Scripts/Startup.
Restart Max and add the Macros to your favorite hot key or quad menu. They are found under the "M" Group category.

This tool is currently getting a rewrite and will include mirror morph target abilities.

Makes life easier when creating morph targets. Add this script to the macroscripts folder and then add the macro to your favorite quad menu. This script will allow you to adjust the values of a morph target without having to go to the Morpher modifier in the modify panel. You can turn on and off Automatically Reload Targets as well as MeshSmooth.

Note: This is stable but has very little error checking in it. Names of the targets might get clipped because it was written for Max 4. The object with Morpher on it must also have Meshsmooth on it.

Select any track and change it to a script controller. In the case shown it is the position controller that is being used.

Make sure that the controller track is selected and trackview is left open.

Run the Macro Script "Open Node Store" and this dialog will open. It will also open the script controller if the window is not already displayed.

Node Handle: This is where you enter a unique name that will reference the node that you are going to store.
Add Node: Once a node handle name is typed in push this button then click on the node that you want to store.
Delete Node: This will delete the selected node in the Node List.
Node List: List of all the currently stored nodes. Displayed is the index of the node in the array, the unique node handle and then the nodes name in Max.
Copy: Will copy all the nodes and the script depending on the checkboxes below.
Paste: Will paste the copied nodes and the script depending on the checkboxes below.

Controllers section. This has allot of tools for me to list here. It takes a bit of getting used to but it does allot. I need to update the controller choices one of these days as it only lists a couple of things that I needed at the time that I created it.

List Controllers Names: List of all the controllers in the lists on the selected objects.
Remove List Controllers: Sets the controllers back to the default.
Zero Out Objects: Adds a list controller to all the selected objects and adds a second controller to the list. Sets the second controller to be active and names the first one Zero and the second one Animation.
Add Controllers: Add/Replace/Rename controllers in a list by the index of the list or just adding to the available track.Add a name to the name field to name controllers on creation.
Set/Del Controllers: Set controllers to be active by either name or index, you can select the controller you want with the List Controllers Names drop down list at the top.
Set first will set the first controller active and Set Top will set the last controller active.
Resets: This will make the value of the currently active controller [0,0,0]

Note: Using Zero Out Objects with a list controller already set up on the object will make the value of the second controller [0,0,0] and add any value that was in the second controller to the first. This means that the object wouldn't move.

Edit controllers is a life saver. It will find and display any controllers that have a dialog box that can be opened. You have all kinds of filtering ability. Just select the object that is displayed in the first window and it will show you all the controllers in the second. Double click on the controller to open the dialog.

Show info never got refined so don't trust it and I know that Link Constraints don't show up either thanks to Alan Noon. There might be a problem with controllers on some IK solved bones but that may have been fixed at some point. Test and let me know please.

Edit Attributes:
For every one that is tired of using the current custom attributes tool in Max here is a solution that has complete control. You will have to write the CA in max script by hand but that means that you can do any thing that you could do with a scripted modifier but have it contained in the file.

Note: Materials are not supported. I started a complete rewrite but have not been able to get back to it but it will support all possible places you could put a CA.

Current Attribute Definitions: Shows all the current attributes on the selected objects for modifiers and base objects. Double click on the CA and it will open it in a script window. This file is automatically saved to a temp file when the CA is found and deleted why another object is selected.
Open Definition: Opens the currently selected CA in the list.
Redefine Definition: Edit the opened script and save over the temp file and press redefine will update the CA with the new code. If there is an error in the code the script might die. It needs a bit more error checking in places.
Make Unique: Makes the CA unique to others of the same name.
Delete Definition: Deletes definition with the whole rollout.

Loaded Attribute Definitions: Contains a list of CA definitions that have been loaded from session to session of Max. You can save your favorite definition and load it and it will always be there for you.
Load Definition: Loads a new saved definition and stores if for the next session of Max.
Remove from List: Removes selected CA's from Load list.
Open Definition: Opens the CA to a Max script window for editing.
Add New Definition: Add the selected CA in the load to the selected object. The CA is added to the currently selected level in the modifier stack.
Redefine Definition: Redefine the definition that is selected in the Current Attribute list with the one that is selected in the Loaded Attribute list. Be careful not to over write a completely different attribute as it allows for this.
Download Example Custom Attribute Definitions: CAs.zip

Just makes it easier to work with setting the Link and Inherit info. Doesn't need much explaining and saves allot of button clicks.

Works on all selected objects.

A bunchOstuff that I need to do all the time. Nothing ground breaking but useful.

Select Bones: Selects all the bones in the scene.
Fix Nub Bones: Sets the length width and height of end bones to match the width of the parent bone.
IK Enable/Disable: Turns IK on and off of all selected IK solvers.
Make Point Helpers: Makes a point helper aligned to each selected object.
Spline On: Sets the view port render to on with the diameter of the spinner.
Colour Objects Left Right: Colours the objects green and red for starboard and port or for you non sea fairing types, right and left. Different values of the colours are used for different object classes.
Skin On/Off: Turns the always deform check button on and off for ALL the skin modifiers in the scene. don't use this if the scene has been animated!
Goal Size: Sets the size of the goal end of selected IK solvers.
Point Size: Sets the size of selected point helpers.
Bone Length: Sets the length of all selected bones as a relative value.
Select CNT Objects: Selects all objects with "CNT" in thier name in the scene. This is how I identify control objects.
Open/Close Groups: Opens/Closes all groups in the scene.
Select Mirror Object: Selects the object that has the selected axis value mirrored. An example would be the right and left forarm.

This script sets pos/rot/scale range types on all selected objects. I wrote this by request for someone on the Max web board.

Macro script category:PEN_Tools

This is a scripted modifier. To use this script, place it in your scripts/startupscripts folder and restart Max. A new modifier will be available called Three_Fing_Hand. Add this modifier to your hand control object and wire your fingers to the sliders in the modifier. In the setup rollout of the modifier you can set your own high and low values for the sliders as well as save off presets for the sliders that can be used to make animating faster by being able to get back to commonly used hand positions.

This is only needed for Max4 users because the CA's don't work with the merge animation tool. Use a combination of CA with the PEN Attribute Holder script and you can do any interface that you like with more control and options.