The help command is generally used to get information about a task. The general format of the command is:
miriad% help taskname -k keyword
which will give you information about the keyword of the given task.
If the -k keyword is omitted, information is given about all
parameters of the task. If the task is omitted, information is given
about the current task. For example:
miriad% help histowill give you help information about the histogramming task, histo.
In addition to tasks, help will give you information about a few other select topics. These include information on tasks in general ( help tasks), on miriad itself ( help miriad) as well as a number of commonly used keywords ( device, line, options, region, select, server, stokes).
Help filters its output through the pager indicated by the PAGER environment variable, which defaults to more.