Semaphores
==========

   The use of semaphores is a way of single-threading critical
sections.  For example only one program is allowed to use the printer
at one time, otherwise the texts would be mixed.

Column items
------------

`ln_Name'
     Name of a semaphore

`NestCnt'
     This element shows how often the semaphore is used.

`ln_Type'
     Type of the structure (usually `signalsem')

Actions
-------

`Update'
     The list of `Semaphores' will be updated.

`Print'
     This function allows you to send the list of `Semaphores' to
     printer or a selected file.

`Obtain'
     This function is used to gain access to a semaphore.  The `NestCnt'
     will be increased at one by this call.

`Release'
     Herewith you can make a signal semaphore available to others.

`Exit'
     The `Semaphores' window will be closed.