Main buttons

ò Upwards and downwards arrows ò

Moves the marked command on one level up(down).

ò Add ò

Adds the current command into "History window".

ò Cancel ò

Cancels the current command.

ò State ò

Changes a state of the marked command in "History window" on active or
not active.

ò Remove ò

Removes the command marked in "History window".

ò Generate ò

Creates an image.