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+# Build Profiles
+Mbed 5.0 supports three primary build profiles, *default*, *debug* and *small*. When using
+the online compiler the *default* profile is used. When building from the command line
+the desired profile can be can be selected by adding the ```--profile <profile>```
+command line flag. Custom user defined profiles can also be specific by giving the path
+the the profile.
+
+## Default profile
+* Small and fast code
+* Full error information - e.x. asserts have filename and line number
+* Hard to follow code flow when using a debugger
+
+## Debug profile
+* Easy to step through code with a debugger
+* Full error information - e.x. asserts have filename and line number
+* Largest and slowest profile
+
+## Small profile
+* Smallest profile and still fast
+* Minimal error information
+* Hard to follow code flow when using a debugger