Documentation:
Typewriter

{{typespeed:#}}

Sets the typing speed in # milliseconds.
Long-form: {{typespeed:50}}
Short-form: {{ts:50}}

{{deletespeed:#}}

Sets the deleting speed in # milliseconds.
Long-form: {{deletespeed:100}}
Short-form: {{ds:100}}

{{delete}}

Deletes all previously typed text, letter-by-letter.
Long-form: {{delete}}
Short-form: {{d}}

{{delete:#}}

Deletes # number of characters from the previously typed text, letter-by-letter.
Long-form: {{delete:10}}
Short-form: {{d:10}}

{{pause}}

Pauses the typewriter by the time set in the Action Delay setting.
Long-form: {{pause}}
Short-form: {{p}}

{{pause:#}}

Pauses the typewriter by # milliseconds.
Long-form: {{pause:1000}}
Short-form: {{p:1000}}

{{break}}

Types a single line break.
Long-form: {{break}}
Short-form: {{b}}

{{break:#}}

Types # number of line breaks.
Long-form: {{break:3}}
Short-form: {{b:3}}

{{erase}}

Deletes all previously typed text immediately.
Long-form: {{erase}}
Short-form: {{e}}

{{move:#}}

Moves the cursor # number of characters from its current position. You can also enter START and END to move the cursor to the start and end of the currently typed text.
Long-form 1: {{move:5}}
Long-form 2: {{move:-5}}
Long-form 3: {{move:START}}
Long-form 4: {{move:END}}
Short-form: {{m:5}}

Note: The {{move:#}} Action will not work when Typewriter Cursor is set to None.