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As we saw in the previous section, the files that hold the profile parameters are located in the profile directory. You can of course copy parameters from one profile to another; for example, in the default performance file, you have these filters:

####### Filter Expressions ########
gui.filter_expressions.label: SIP
gui.filter_expressions.enabled: FALSE
gui.filter_expressions.expr: sip
gui.filter_expressions.label: RTP
gui.filter_expressions.enabled: FALSE
gui.filter_expressions.expr: rtp

If you need one of these filters in another profile, simply copy it to the same file in the profile directory that you need it in.