# System Parameters

'+M' | UNIX/Linux Millisecond Timer

## Description

(UNIX/Linux Parameter Only - has no effect on Windows)

The '+M' parameter controls whether PxPlus will use a high-resolution (millisecond) timer to process WAIT directives on UNIX/Linux systems. By default and for consistency with older UNIX/Linux versions, this parameter is set to Off, resulting in a WAIT directive rounding the time up to an integral number of seconds.

If the operating supports it, setting this parameter allows WAIT statements to wait fractions of a second.

(The '+M' system parameter was added in PxPlus v8.11, build 9182.)

## Default

Off

## See Also

WAIT Temporarily Halt Execution