superscript
a superscript
Note Reference Marks
Yes
footnote
it is a header
Yes
Yes. The requirement to signal always exists.
A "signal plan" is typically a document that outlines how signals are used or managed, whether in traffic control or communication systems. It specifies signal timings in traffic or signal allocation in communication networks.
Yes.
Physical layer which is the first layer in OSI reference model is responsible for signal encoding and decoding.
Many types of signal exists.
remove steering wheel and then it's pretty self explanatory.