NAME
    LockRexxBase - Obtain a semaphore lock on the RexxBase structure

SYNOPSIS
    LockRexxBase(resource)
                 D0

    VOID LockRexxBase(ULONG);

FUNCTION
    Secures the specified resource in the ARexx library base.

INPUTS
    resource - A manifest constant defining which resource to lock.
               ZERO locks all resources.

NOTES
    Currently, only ZERO resource type is available.  You *MUST* make
    sure that you do not call this function with an undefined value
    as it may become defined at some future date and cause unwanted
    behavior.

SEE ALSO
    UnlockRexxBase()

BUGS