|★ APPLICATIONS ★ PROGRAMMATION ★ Dlan (c) Campbell Systems ★|
|DLAN: Display LANguage||Applications Programmation|
Something of a deéparture for Campbell Systems, who seem to have been permanently seconded to Am soft these days.
Dlan is short for Display Language - a series of commands that tit into Basic Rem statements and which are designed to allow the screen to be used to produce eyecatching moving text displays for shop windows or other business uses.
However, aa with any computer 'language' it is the ingenuity of the programmer that determines the potential use. You are provided with an Epsom screen dump facility, or you could use your own for a different range of printers, and the display can be used to produce posters, club infosheet titles, labels or whatever.
I have also used it to add fancy lettering to a picture produced with a screen designer and also for producing moving titles for home videos.
Setting up the display via the supplied commands is incredibly simple, quick, and easy to use - the language also includes some simple input, subroutine and debugging commands; eg, single stepping, and the whole thing can be easily interfaced to your own Basic programs within the 12K free memory limitation.
Unless you tell it to stop, the routine will repeat and a nice touch is that the display can be 'locked'so that it can't be broken into or the computer reset by spotty boys (short of switching it off).