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 \fB-v\fP
 version information
 
+.SH EXIT CODES
+Any fatal errors within `jc` will generate an exit code of `100`, otherwise the exit code will be `0`. When using the "magic" syntax (e.g. `jc ifconfig eth0`), `jc` will store the exit code of the program being parsed and add it to the `jc` exit code. This way it is easier to tell if an error was from the parsed program or `jc`.
+
+Consider the following examples using `ifconfig`:
+
+.RS
+`ifconfig` exit code = `0`, `jc` exit code = `0`, combined exit code = `0` (no errors)
+
+`ifconfig` exit code = `1`, `jc` exit code = `0`, combined exit code = `1` (error in `ifconfig`)
+
+`ifconfig` exit code = `0`, `jc` exit code = `100`, combined exit code = `100` (error in `jc`)
+
+`ifconfig` exit code = `1`, `jc` exit code = `100`, combined exit code = `101` (error in both `ifconfig` and `jc`)
+.RE
+
 .SH ENVIRONMENT
 You can specify custom colors via the \fBJC_COLORS\fP environment variable. The \fBJC_COLORS\fP environment variable takes four comma separated string values in the following format: