FORMULA-BASED LOOPING MACROS
BUILDMC builds up matrix column by column
BUILDMP builds up matrix point by point
BUILDMR builds up matrix row by row
BUILDSP builds up series point by point
BUILDSS builds up series from subseries
FOR executes formula in loop
FOR2 executes formula in two-level nested loop
STRING-BASED LOOPING MACROS
BUILDMCS builds up a matrix column by column with string
BUILDMRS builds up a matrix row by row
BUILDSPS builds series up point by point with string
BUILDSSS builds series up from subseries with string
FORS executes command string in loop