User manual: add more about dive log export.

This patch updates the information about dive log export.
Export to Worldmap, as well as to HTML are covered.

Small typo corrections elsewhere in the manual.

Signed-off-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

Documentation/user-manual.txt

@@ -1709,29 +1709,39 @@ image::images/MergedDive.png["Example: Merged dive",align="center"]
 [[S_ExportLog]]
 == Exporting the dive log or parts of the dive log
 
-A dive log can be saved in three formats:
+The export function can be reached by selecting _File -> Export_, which brings up
+the Export dialog. This dialog always gives two options: save ALL dives, or save only
+the dives selected in *Dive List* panel of _Subsurface_. Click the appropriate
+radio button (see images below).
 
-* _Subsurface_ XML format. This is the native format used by _Subsurface_.
+image::images/Export.jpg["Figure: Export dialog",align="center"]
 
-* Universal Dive Data format (UDDF). Refer to http://uddf.org for more information.
+A dive log or part of it can be saved in three formats:
+
+* _Subsurface XML_ format. This is the native format used by _Subsurface_.
+
+* Universal Dive Data Format (_UDDF_). Refer to _http://uddf.org_ for more information.
 UDDF is a generic format that enables communication among many dive computers
 and computer programs.
 
-* CSV format, that includes the most critical information of the dive
+* _Divelogs.de_, an Internet-based dive log repository. In order to upload to _Divelogs.de_,
-profile. Included information of a dive is: number, date, time,
+one needs a user-ID as well as a password for _Divelogs.de_. Log into _http://en.divelogs.de_
+and subscribe to this service in order to upload dive log data from _Subsurface_.
+
+* _CSV_ format, that includes the most critical information of the dive
+profile. Included information of a dive is: dive number, date, time,
 duration, depth, temperature and pressure.
 
-In order to save the WHOLE dive log (i.e. all trips and dives), select *File*
+* _Worldmap_ format, an HTML file with a world map upon which each dive and
-from the Main menu. To save in _Subsurface_ XML format, select _File -> Save as_.
+some information about it are indicated. This map is not editable.
-To save in UDDF format, select _File -> Export UDDF_ and to save in CSV
-format, select _File -> Export CSV_.
 
-In order to save only one or more dives or one or two trips, select the
+* _HTML_ format, in which the dive(s) are stored in an HTML format, readable
-appropriate dives or trips in the *Dive List* panel and then right-click the
+with an Internet browser. This file is not editable. HTML export is specified
-selected dives to bring up the context menu. To save in _Subsurface_ XML
+on the second tab of the Export dialog (image *B* above). If the _Export List
-format, select _Save as_ from the context menu. To save in UDDF or CSV
+only_ option is checked,
-format, select _Export as UDDF_ or _Export as CSV_ from the context menu
+the dive profile information is not exported. This dialog also has some
-respectively.
+style-related options. The HTML dive log contains most of the information
+and aslo contains a search option to search the dive log.
 
 Export to other formats can be achieved through third party facilities, for
 instance _www.divelogs.de_.
@@ -2067,19 +2077,19 @@ in the _Rates_ section of the dive setup.
 
 ** *b) Oxygen management*: In the *Gas Options* part of the dive specification, the maximum partial
 pressure for oxygen needs to be specified for the
-bottom part of the dive (bottom po2) as well as for the decompression part of the dive (deco po2).
+bottom part of the dive (_bottom po2_) as well as for the decompression part of the dive (_deco po2_).
 The most commonly
-used values are 1.4 bar for the bottom part of the dive and 1.5 b ar for any decompression
+used values are 1.4 bar for the bottom part of the dive and 1.5 bar for any decompression
 stages. Normally, a partial pressure of 1.5 bar is not exceeded.
 
 
 ** *c) Gas management*: One needs keep within the limits of the amount of gas contained in the dive
 cylinder(s), allowing for an appropriate margin for safe return to the surface, possibly
-sharing with a buddy. Undr the _Gas Options_ heading, specify the best (but conservative) estimate
+sharing with a buddy. Under the _Gas Options_ heading, specify the best (but conservative) estimate
 of your surface-equivalent air consumption (SAC, also termed RMV) in litres/min (or cft/min,
 determined by the settings of the _Preferences_ tab of _Subsurface_.  Specify the SAC during the
-bottom part of the dive (bottom SAC) as well as during the decompression or safety stops of the
+bottom part of the dive (_bottom SA_) as well as during the decompression or safety stops of the
-dive (deco SAC). Values of 20-30 l/min are common. For good gas management, a thumbsuck guess
+dive (_deco SAC_). Values of 20-30 l/min are common. For good gas management, a thumbsuck guess
 is not sufficient and one needs to
 monitor one's gas consumption on a regular basis, dependent on different dive conditions and/or equipment.
 The planner will calculate the total volume of gas used during the dive and will issue a warning