Repeat last load command :reload
The :reload command can be used to repeat the last load command.
If none of the previously loaded files has been modified since the last
time that it was loaded, then :reload will not have any effect.
However, if one of the modules has been modified, then it will be
reloaded. Note that modules are loaded in a specific order,
with the possibility that later modules may import
earlier ones. To allow for this, if one module has been reloaded, then all
subsequent modules will also be reloaded.
This feature is particularly useful in a windowing environment. If the
interpreter is running in one window, then :reload can be used to
force the interpreter to take account of changes made by editing modules
in other windows.