Key words are printed in uppercase when the program is output with "list". But entering code is usually done in lowercase.
line 10: screen mode 0 is used (16 colours; 20x25 characters)
lines 20/30: set up colour palette; note that multiple instructions can be combined on a line
lines 40 to 70: a "for" loop over i
line 50: set the paper (background) colour to i
line 60: print 40 spaces (= 2 lines); space$ is a built-in function that returns a string
When the program ends, the "Ready" prompt is white-on-black because the current foreground (pen) colour, which is 1, had been set to white ("ink 1,26"). The background colour is 8 after the loop and "ink 8,0" had set that to black previously. See File:Amstrad CPC ink numbers.png for a chart of Amstrad ink numbers.
Trwyddedu
Yr wyf fi, deiliad yr hawlfraint ar y gwaith hwn, yn ei gyhoeddi yn ôl termau'r drwydded a ganlyn:
Wrth gysylltu rhyw waith â'r weithred gyfreithiol hon, mae'r person a'i gysylltodd wedi ei gyflwyno i'r parth cyhoeddus gan ildio pob hawl cyfraith hawlfraint arno yn fydeang, gan gynnwys pob hawl perthynol a chyfagos, hyd eithaf y gyfraith. Gallwch gopïo, addasu, dosbarthu a pherfformio'r gwaith, hyd yn oed at bwrpas masnachol, a hynny oll heb ofyn caniatad.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
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