Procedural basics
booleans and gates
*maybe clarify that eval mode is supplemented by gt / lt cooperators which can perform actual comparisons like > < == etc.. if they return 0 then things are equal
*show*
true false :: true false,and or xor :: bool ops (and/or/xor/etc..)
eval( _10 v_24 ) :: eval, evalneg( _10 v_24 ) :: evalneg, inv true = false :: invert bool
_1 :: in math like +/-/*/etc.. true=1 false=0