This optional key name specifies the height of the workstation display in mm, measured across the flattest part of the display (usually the centre). This will affect the automatic scaling of applications and may cause part of the application to appear outside of the display area of a workstation, if the settings do not match those present in the workstation last-used to design the application.

If you wish to maintain the portability of your application, so that it can be used at different resolutions and with different dot pitches, you will probably find the default values acceptable. However, if you decide to change them for one workstation, make sure that you change them for every single workstation that will also be used to access that application and bear in mind that if you also use those workstations to access other applications, all those applications will in turn, be affected by the scaling.

• The default value for VGA (640 x 480) is 160
• The default value for SVGA (800 x 600) is 200
• The default value for XGA (1024 x 768) is 240
• The default value for all higher resolutions is 270