Douglas Hergert About Roles Name : Douglas Hergert Book Role Your Timex 1000 and ZX81 Author Mein Sinclair ZX81 Author Mijn Sinclair ZX81 Author Timex/Sinclair 1000 BASIC Handbook, The Author Sinclair ZX81 BASIC Handbuch Author Sinclair ZX Spectrum BASIC Handbuch Author Change Request You can request changes or additions here. You can upload files. All change requests are actioned as quickly as possible and you will be informed of the result. Details Files Your Name * Email * Details Your browser doesn't have Flash, Silverlight or HTML5 support. Submit Thank you for your change request. We will respond as soon as possible.