bafe0478_ROX_Filer_User_Manual__Key_or_mouse_button
[Action] Open the file or directory clicked on. Hold down Control to select things instead of opening them. Hold down Shift to look inside applications, treat files as text, follow symlinks, or get more control over mount points (see Removable devices). [Key or mouse button] 
Left button click
ROX-Filer User Manual
Key or mouse button