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-rw-r--r--Documentation/user-manual.txt6
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt
index f7fad6e0e..765ded59d 100644
--- a/Documentation/user-manual.txt
+++ b/Documentation/user-manual.txt
@@ -154,7 +154,9 @@ Now it is time to hook up your dive computer to your PC:
* On Linux this means you need to have the correct kernel
module loaded. Most distributions will do this automatically
- for you.
+ for you. Make sure you have read/write permissions to that
+ port. On Ubuntu that could mean you should do 'sudo adduser
+ [your_username] dialout'.
* On Windows, the OS should offer to download the correct
driver when you connect your dive computer to the USB port.
@@ -1021,7 +1023,7 @@ are familiar with dive planning or use closed circuit rebreathers.
| GFlow | Gradient factor low value affects the ceiling calculation, leave to default if you are not familiar with GF
| GFhigh | Gradient factor high value affects the ceiling calculation, leave to default if you are not familiar GF
| **Ending Depth** | Depth where current segment ends; a different depth from the previous segment creates a transition segment for ascent or descent, keeping the same depth creates a segment at the given depth. By default the planner uses the measurement for length set in the preferences (meters for most users) - this can be overridden by explicitly specifying 'm' or 'ft'.
-| **Segment Time** | Enter time in minutes; segment duration / relative time is indicated by a '+': '+3' or '+3:00' creates a segment that lasts 3 minutes, an absolute time is indicated by @ character. Time '@7:30' means that the segment ends 7 minutes and 30 seconds after the start of a dive.
+| **Segment Time** | Enter time in minutes; segment duration / relative time can be indicated by an optional '+': '+3' or '+3:00' creates a segment that lasts 3 minutes, add an at sign like '@7' for a segment that ends 7 minutes after the start of the dive.
| **Gas Used** | Breathing gas mix used; the parser is reasonably flexible and understands terms like AIR, EAN32, 36% or 15/50 (compressed air, 32% nitrox, 36% nitrox or 15% O₂ / 50% He trimix, respectively); leaving this field empty indicates continued use of the previous gas, air by default
| **CC SetPoint** | SetPoint when diving with a closed circuit rebreather. Leave empty for open circuit dives with standard scuba equipment
|===============================================================================