[gradsusr] Bug related to 'set clab masked' ?

[MY]

Dear all,

I encounter a problem: when the command 'set clab masked' is used, and
one of the end of a line is located at the region where 'masked'
labels are displayed, the line can't be displayed with "draw line"
command.

Is this a bug? I'm using the grads-2.0.a9.oga.1-win32_superpack.exe.

Best wishes,
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YING, Ming
Shanghai Typhoon Institute of China Meteorological Administration
166 Puxi Road, Xuhui District, Shanghai, 200030
PR China
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