This Keyboard Maestro macro is used to modify selected text or the clipboard text, if no text is selected. The text can be augmented* or filtered** in many ways. Here are three simple examples:
Task done → ~~Task done~~ (one of several Markdown additions)
"Hi there." → “Hi there.” (dumb quotes converted to smart quotes)
local_KMvar → %Variable%local_KMvar% (variable name to variable value as text)
The macro has been designed to provide immediate additions (via dedicated hot keys) for those used frequently; whereas selection from two lists*** for those used less often.
*text additions can easily be added to the 34 initially configured
**text filters can be easily added to the 16 initially configured
***there is one list for text additions and one list for text filters
DEMONSTRATION
The following video includes four quick demonstrations of this macro: https://youtu.be/Yvnwopo6fio
SETTINGS
By default, this macro is triggered using a hyper key (⌃⌥⇧⌘), plus letter T for general use, B for Markdown Bold, I for Markdown Italics, L for Markdown Links, and V for Keyboard Maestro variable to variable value as text. These can be changed (or deleted, or added to) for individual needs, but (some combination of ⌃⌥⇧⌘ modifiers)+T should be used for general use and (some combination of ⌃⌥⇧⌘ modifiers)+(other keys) should be used for the immediate additions.
Refer to the comments above the two text variables local_Additions and local_Filters for more information.
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quotes is easy enough.
However, I normally like to be nicer to my quotes and call them Straight Double Quotes 
, but I’m using dumb in the macro to be consistent with the Keyboard Maestro Filter action.
Thanks!