you can use the showstat() command.
However Maple commands come in two "flavours", those implemented in the kernel (also known as "builtin" commands) and those in the "library". You cannot view the code for any "builtin" command, but showstat() will display the code for library commands.
Unfortunately both taylor and laurent are "builtin" commands, so attempting showstat(taylor) or showstat(laurent) will hust return the error
Error, (in showstat) cannot debug built-in functions
You can contrast this with (for example) showstat(mtaylor) which will display the code implemented by the command.
Note that the code returned by showstat() may (probably will!) contain references of "builtin" commands