You have the right idea, but are far wrong about the details.
WTO is a macro. It is not a command. An Assembler macro definition is a skeleton that causes the Assembler to generate code. SYS1.MACLIB(WTO) is the macro definition. You might want to look at it, though don't try to understand it; it is quite involved, and it represents more than 40 years of patches. If its original author is still alive, he would almost certainly not recognize it, possibly have trouble finding anything he wrote.
it looks like command wto occupy the first 10 bytes of wto11. wto11 point to the head address of that line.
It would appear you did not bother to look at the macro expansion (the code generated by the macro) in the program listing. There is no command there!