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The following two tables lists all constants defined by the ps extension.

Contants for line caps

Name	Meaning
ps_LINECAP_BUTT
ps_LINECAP_ROUND
ps_LINECAP_SQUARED

Contants for line joins

Name	Meaning
ps_LINEJOIN_MITER
ps_LINEJOIN_ROUND
ps_LINEJOIN_BEVEL