Where to find correct syntax for operator in Blender API manual? I have an issue finding the correct documentation online.

Example:

CTRL + A calls the following command:

bpy.ops.wm.call_menu(name="VIEW3D_MT_object_apply") 


And a selection option reads out the following command:

bpy.ops.object.transform_apply(scale=True)
bpy.ops.object.transform_apply(location=False, rotation=True, scale=False)


Solution:

Now by trial and error I found out that if you want to call an operator it has to be formatted the following way:

row.operator("wm.call_menu", text="Apply Tans").name="VIEW3D_MT_object_apply"
row.operator("object.transform_apply", text="Apply Rot").rotation=True


name and rotation have to come after the operator closing bracket to pass that information to the operator.

Where can you in the Blender Python API find this information? I searched for it but do not find anything about the correct syntax.
The docs have this information if you know what you're looking for. 

http://www.blender.org/api/blender_python_api_current/.../wm.call_menu

In this case TextEditor > Templates > Python > UI Menu has a working example of how to trigger a specific menu 

The UI source is often the most comprehensive documentation. For example space_view3d.py's class VIEW3D_MT_mirror(Menu) shows how to pass properties to an operator. As you have now seen

props = layout.operator("transform.mirror", text="Z Global")
props.constraint_axis = (False, False, True)
props.constraint_orientation = 'GLOBAL'


Here both constraint_axis and constraint_orientation are passed as values to bpy.ops.transform.mirror as soon as the button is pressed.