HTML Protect Center supports the following private tags. If the program finds such tags during encryption, it handles the text between them according to their type. System tags are most effective in "Protect Tagged Areas" mode.

<!--HPC_START-->, <!--HPC_END--> - If you wish to protect only some particular part of source code, just enclose it within these tags.

<!--HPC_SKIP_START-->, <!--HPC_SKIP_END--> - If you want some part of source code to remain unchanged, you have to enclose it within these tags.