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Epsilon User's Manual and Reference >
Variable Reference >
is-gui: variable
Default value: varies
The is-gui variable indicates whether a graphical version of
Epsilon is running. In pure-text versions of Epsilon, this variable is
zero. When the 32-bit Windows version of Epsilon runs under Windows
NT/2000/XP and later Windows versions, it sets this variable to 2.
Under Windows 95/98/ME, it sets this variable to 3. The variable
is 1 when the 32-bit version runs under Windows 3.1 using the
Win32S package (though this is not supported). The 16-bit version of
Epsilon for Windows 3.1 always sets this variable to 4.
More info:
System Primitives (Primitives)
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