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-rw-r--r--Documentation/user-manual.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt
index 8d60f6ea4..015cdaac0 100644
--- a/Documentation/user-manual.txt
+++ b/Documentation/user-manual.txt
@@ -3198,7 +3198,7 @@ image::images/PlannerWindow1_f20.jpg["FIGURE: Dive planner startup window",align
as well as the gas composition within that cylinder. This is done in a similar way as for
<<cylinder_definitions,providing cylinder data for dive logs>>. Choose the cylinder type by
double clicking the cylinder type and using the dropdown list, then specify the work
- pressure of this cylinder. By leaving the oxygen concentration (O2%) filed empty,
+ pressure of this cylinder. By leaving the oxygen concentration (O2%) field empty,
the cylinder is assumed to contain air. Otherwise enter the oxygen and/or helium
concentration in the boxes provided in this dialogue. Add additional cylinders by using the
"+" icon to the top right-hand of the dialogue.