This routine adds an unlabelled, temporary, one-shot timer, set to go off after the designated number of seconds. The first argument (seconds) must evaluate to a time between 0.1 second, and 23 hours 59 minutes 59 seconds (that is, 0.1 to 86,399).
From version 3.61 onwards of MUSHclient the interval may include fractions (ie. it is a floating-point number). This lets you set up sub-second intervals (eg. 0.5 seconds, 1.2 seconds).
To enable this you need to go to Global Configuration -> Timers and set the 'Timer Interval' in seconds to zero.
The maximum granularity of the timers is currently 0.1 seconds. In other words, regardless of what you specify, the timers are only checked every 10th of a second.
You can also use DoAfterSpeedWalk - this is the same as DoAfter, except the command is interpreted as a speedwalk sequence.
You can also use DoAfterNote - this is the same as DoAfter, except the text is sent to the output window, not the MUD.
The purpose of this is simplify the frequent case of simply wanting to do something in a few seconds, rather than using AddTimer.
WARNING - as DoAfter is implemented by using temporary MUSHclient timers, it will not work if timers are disabled. If DoAfter is not working for you (however the function call is returning zero) then ensure that timers are enabled in the Timers configuration dialog.