Also, documentation doesn't accurately describe +x and +n switches, because using either +tx or +tn causes both the minimize and maximize icons to appear in the titlebar, with the actual difference from +tnx being that +tn displays the maximize icon in the disabled state, while +tx displays the minimize icon in the disabled state.

If the icons should be displayed in the disabled state, perhaps the syntax should be something like -tn[N]x[N], ie +tn0x

The synopsis list of switches shows [+bdeflLmnstx] without describing what +m does, and I can't find any effect where +m does anything, so it may be a typo to be included there.