_Added in 1.9.4_

*/filter [-asdfkwxnpriocteubglLz] [n-n2] [c s] <infile | dialog id> <outfile | dialog id | alias> [alias] <matchtext>*

*Switches*

     -w - indicates the parameter is a window
    -f - indicates the parameter is a file
    -a - sorts filtered lines by calling the optional [alias] parameter, the alias is passed two lines, $1 and $2, it must compare both and return -1, 0, or 1 to indicate relative sort order of these lines to each other
    -x - excludes matching lines
    -n - prefixes lines with a line number (the Nth match)
    -d - TODO
    -s - indicates the status window will be used
    -p - TODO
    -r - specifies the range of lines n to n2 for filtering
    -b - strips BURK codes when matching text
    -g - indicates the matchtext is a regular expression
    -z - TODO
    -k - indicates that you have specified an <alias> as the output instead of a window name. The alias will be called with the result of each filtered line with the form $<alias>($1) where $1 is the matched line
    -i - indicates that you have provided a [dialog id] custom dialog control as the input
    -o - indicates that you have provided a [dialog id] custom dialog control as the output
    -c - switch clears the output window/file before writing to it
    -t - TODO
    -e - TODO
    -u - TODO
    -l - filters from the side-listbox in the first window
    -L - filters to the side-listbox in the second window