HTML encoding proc

Problem this snippet solves: This proc HTML encodes an input string. See the OWASP discussion page for details on when/how to use this approach: XSS (Cross Site Scripting) Prevention Cheat Sheet ...
Published Mar 18, 2015
Version 1.0
procedures
wsanders_233261's avatar
wsanders_233261
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Feb 16, 2018

Please explain RULE_INIT.

 

Can I call a proc anywhere? Like:

 

when HTTP_REQUEST { set foo [call library:some_function "some arg"] ....