Depending on the setting of the show/hide hidden files flag, hidden files (those beginning with '.') are either shown or not.
The functions are:
This function is normally not needed, since the fileBrowser checks for modifications of the current directory in regular intervals, updating the list automatically. However, a manual update may be needed in certain situations (for example, if the time/dates are out of sync between NFS hosts) or if you do not want to wait for the next automatic update.