When rendering a DITA map stored on a remote drive, the titles of the topics referenced by this map are loaded asynchronously by default.

This considerably speeds up^[a] opening a DITA map stored on a slow remote drive such as the Google Drive™.

This feature is controlled by the user preference called asyncLabelLoading.

There is no user interface which may be used to change the value of this user preference. If you need to change its value, please use xxe's command-line options -putpref and -delpref. Example: start XXE using "xxe -putpref asyncLabelLoading yes".

The format of this string is:

entries --> ( entry ('\n' entry)* )?

entry --> mime_types ':' extensions ':' 
          magic_strings ':' 
          xml_name_patterns ':' 
          command

mime_types --> ( mime_type (',' mime_type)* )?
extensions --> ( extension (',' extension)* )?
magic_strings --> ( magic_string (',' magic_string)* )?
xml_name_patterns --> ( xml_name_pattern (',' xml_name_pattern)* )?

In any of the above fields, 
character ':' must be escaped using "\072"
and character ',' must be escaped using "\054".

magic_string --> HEXADECIMAL_NUMBER

xml_name_pattern --> ( '{' namespace_URI? '}' )? local_part
One of local_part or namespace_URI 
may be equal to "*".

After specified number of seconds, a lock is to be automatically removed by the server (typically WebDAV) hosting the locked document.

A negative or null value may be used to create locks which should never expire.

Note that there is no need to create permanent locks as XXE automatically “refreshes” the lock each time the locked document is being saved.

One notable exception is Subversion, which when used through WebDAV, does not support locks having a finite lifetime.

This user preference cannot be specified using the GUI of XXE. You need to use the -putpref command-line option for that.

The format of this string is:

entries --> entry [ '\n' entry ]*
entry --> document_URL '\n' view_settings
view_settings --> center_pane '|' top_pane '|' right_pane '|'
                  bottom_pane '|' left_pane
pane --> stylesheet_name|'-' ';' size ';' add_order ';' text_size ';'
         display_images ';' show_tags ';' tree_view_details
size --> DOUBLE_BETWEEN_0_AND_1 (1 for center_pane)
add_order --> POSITIVE_INTEGER (0 for center_pane)
text_size --> INTEGER_BETWEEN_8_AND_24
display_images --> image|thumbnail|box
show_tags --> no|yes|all
tree_view_details --> POSITIVE_INTEGER_IN_HEXADECIMAL_FORMAT

No stylesheet_name at all means: hidden pane. "-" means: tree view. Example: "file:/home/john/doc.xml\nDocBook;1.0;0;12;box;no;|;;;;;;|;;;;;;|;;;;;;|;;;;;;".