What does a pixel mask mean?
(A) string containing only 1’s
(B) string containing only 0’s
(C) string containing two 0’s
(D) string containing 1’s and 0’s


Answer: (D)

Explanation: Pixel counts for the span length and interspan spacing can be specified in a pixel mask, which is a string containing the digits 1 and 0 to indicate which positions to plot along the line path. The mask 1111000, for instance, could be used to display a dashed line with a dash length of four pixels and an interdash spacing of three pixels.

So, option (D) is correct.

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