The command nop does nothing. This means it is an explicit parse
element in the Sollya language that finally does not produce any
result or side-effect.
The command nop may take an optional positive integer argument
n. The argument controls how much (useless) multiprecision
floating-point multiplications Sollya performs while doing nothing.
With this behaviour, nop can be used for calibration of timing
The keyword nop is implicit in some procedure
definitions. Procedures without imperative body get parsed as if they
had an imperative body containing one nop statement.