Question

what is a placeholder???

Answer 1

a significant zero in the decimal representation of a number.

a symbol or piece of text used in a mathematical expression or in an instruction in a computer program to denote a missing quantity or operator.

an element of a sentence that is required by syntactic constraints but carries little or no semantic information, for example the word it as a subject in it is a pity that she left, where the true subject is that she

Answer 2

••••Answer :- Placeholder is a dotted rectangular box used to hold presentation object like images,text,sound,videos ,charts etc.