What is the definition of literal language

The term literal meaning means that all words are in strict accordance with their original meanings. In other words, to apply the literal meaning is to take the words in their most basic sense without metaphor or exaggeration.

this is normally used to make the reader understand everything ... without any use of indirect language.

well to make it clear to u ill try to give an example:

" Can you wait outside? "

In the literal meaning, this could be construed as:

Do you have the ability to wait outside?