Run this script to toggle between some typical desirable cutoff positions. (RF4)

toggleCutOffPosSize.py

# menuTitle : Toggle SpaceCenter Cut-Off PosSize
# shortCut  : control + c

from mojo.UI import getDefault, setDefault
from lib.tools.notifications import PostNotification


f = CurrentFont()

# list of all start and end points you'd want to toggle between
positions = [
    (0, 'xHeight'), 
    (0, f.info.capHeight), 
    (0, f.info.ascender), 
    (f.info.descender, 0),
    (f.info.descender, 'xHeight'),
    (f.info.descender, f.info.capHeight),
    (f.info.descender, f.info.ascender)
    ] 
    
positions.reverse()
curr_pos = (getDefault('spaceCenterCutOffStartPosition'), getDefault('spaceCenterCutOffEndPosition'))

hits = 0  # checking to see if the current cut-off is ANY of those above
for pos_i in range(len(positions)):
    if curr_pos == positions[pos_i]:
        setDefault('spaceCenterCutOffStartPosition', positions[pos_i-1][0])
        setDefault('spaceCenterCutOffEndPosition', positions[pos_i-1][1])
        PostNotification("doodle.preferencesChanged")
        hits += 1

# ... because if not, it will start at the beginning of the list
if hits == 0:
    setDefault('spaceCenterCutOffStartPosition', positions[0][0])
    setDefault('spaceCenterCutOffEndPosition', positions[0][1])
    PostNotification("doodle.preferencesChanged")