searched for configuration files. When it's not specified, _both_
default directories are searched for configuration files.
-If the input path is a directory, then if 'SESSION' is specified, the
-tracing session configuration named 'SESSION' is searched in all the
-files of this directory and loaded if found. If 'SESSION' is not
-specified, the option:--all option is implicit: all the tracing session
-configurations found in all the files in this directory are loaded.
-
-If the input path is a file, then if 'SESSION' is specified, the tracing
-session configuration named 'SESSION' is searched in this file and
-loaded if found. If 'SESSION' is not specified, the option:--all option
-is implicit: all the tracing session configurations found in this file
-are loaded.
-
-By default, existing tracing sessions are not overwritten when loading;
+If the input path is a *directory*, then:
+
+* If 'SESSION' is specified, the tracing session configuration named
+ 'SESSION' is searched for in all the files of this directory and
+ loaded if found.
+* If 'SESSION' is not specified, the option:--all option is implicit:
+ all the tracing session configurations found in all the files in this
+ directory are loaded.
+
+If the input path is a *file*, then:
+
+* If 'SESSION' is specified, the tracing session configuration named
+ 'SESSION' is searched for in this file and loaded if found.
+* If 'SESSION' is not specified, the option:--all option is implicit:
+ all the tracing session configurations found in this file are loaded.
+
+By default, existing tracing sessions are not overwritten when loading:
the command fails. The option:--force option can be used to allow this.