Doc: Add a short overview of what debuggers do

Change-Id: I07062ea6e046ce51a9d3091e9d86071415706e6c
Reviewed-by: hjk <hjk@qt.io>

1 files changed, 25 insertions, 4 deletions

diff --git a/doc/qtcreator/src/debugger/creator-only/creator-debugger.qdoc b/doc/qtcreator/src/debugger/creator-only/creator-debugger.qdoc
index 163981b3a5..4e10efc30a 100644
--- a/doc/qtcreator/src/debugger/creator-only/creator-debugger.qdoc
+++ b/doc/qtcreator/src/debugger/creator-only/creator-debugger.qdoc
@@ -14,10 +14,31 @@
 
     \title Debugging
 
-    \QC has a debugger plugin that acts as an interface between the \QC
-    core and external native debuggers such as the GNU Symbolic Debugger (GDB),
-    the Microsoft Console Debugger (CDB), a QML/JavaScript debugger, and the
-    debugger of the low level virtual machine (LLVM) project, LLDB.
+    A debugger lets you see what happens \e inside an application while it runs
+    or when it crashes. A debugger can do the following to help you find errors
+    in the application:
+
+    \list
+        \li Start the application with parameters that specify its behavior.
+        \li Stop the application when conditions are met.
+        \li Examine what happens when the application stops.
+        \li Make changes in the application when you fix an error and continue
+            to find the next one.
+    \endlist
+
+    The \QC debugger plugin acts as an interface between the \QC
+    core and external native debuggers that you can use to:
+
+    \list
+        \li Debug executable binary files - GNU Symbolic Debugger (GDB),
+            the Microsoft Console Debugger (CDB), and the debugger of the
+            low level virtual machine (LLVM) project, LLDB.
+        \li Debug QML and Java code and Qt Quick applications -
+            QML/JavaScript debugger.
+        \li Debug Python source code - \c pdb.
+    \endlist
+
+    For more information, see:
 
     \list