Adds a range of demand-zero allocation pagelets to a process's
    virtual address space for the execution of the current image.

    Format

      SYS$CRETVA  inadr ,[retadr] ,[acmode]

    C Prototype

      int sys$cretva  (struct _va_range *inadr, struct _va_range

                      *retadr, unsigned int acmode);

  Additional Information (explode) :

• Arguments