~~NOTOC~~
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====== GetOpenBuildTab ======
GetOpenBuildTab ->openTab

===== Description =====
Returns a number indicating the currently open build tab. 0 for Struct, 1 for Weapons, 2 for Air. 3 for Special, and 4 for Custom

===== Examples =====
<code 4rpl>
   PrintAllSp("Open Build Tab: " GetOpenBuildTab)
</code>
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