Documentation:
--------------
WinEdt Help -> WinEdt Documentation -> User's Guide -> Modifying the default menu
file://localhost/C:/Program Files/WinEdt Team/WinEdt/Doc/HTML/Menu.html

Help in the Menu setup and Main Menu dialogs

GUIDELINES
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To insert a new template as a macro and a corresponding menu entry
under the "insert" menu, two steps are needed:

1. Insert the menu entry into the "insert" menu
2. create a .ltx file that defines the macro

Step 1:
a. Options -> Menu setup -> &Insert -> open icon
b. Insert icon (triangle pointing down and horizontal line above)
   Macro
   put the name of the new macro
c. Add the following in the Macro box (top box) and edit the .ltx file name mentioned there
   to correspond to the new definition.
   [SetSel(0);Mark(9);ReadFile("%B\Templates\LaTeX\Invis.ltx",9);InsLine;CMD("Go To Beginning Of Line");InsText("%!9");Goto(9);CMD("Next Bullet")]
d. After the Menu has been modified you have to press "OK" in both the
   Menu Items and the Menu Setup dialog in order to make the changes
   effective.

Step 2:
Create a .ltx file that defines the macro in directory
        C:\Program Files\WinEdt Team\WinEdt\Templates\LaTeX\
by copying and modifying an existing .ltx file