6.37.3 Can you answer these questions?

6.37.3.1 Track changes option

https://tex.stackexchange.com/landing/r/digest?cta=question&id=553381

I would like to make some changes in a text I have in latex. 
Is there any way to use something like track changes option of the word where someone can see what deleted and in a new color what added in  ... 
[formatting]
 

asked by foc https://tex.stackexchange.com/landing/r/digest?cta=user&id=195847 1 vote

answered by Fran https://tex.stackexchange.com/landing/r/digest?cta=user&id=11604 0 votes

6.37.3.2 Underline without Indentation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=553036

How do you underline in LaTeX without indentation? I am using the \underline command: 
CODE: 
So then Black History Month for All Americans is a time to remember, a time to dream and a time to  ... 
[underline]
 

asked by user219671 https://tex.stackexchange.com/landing/r/digest?cta=user&id=219671 1 vote

6.37.3.3 How can I load a standard font size file in a beamer theme?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=553421

I am struggling to set a standard font size definition in my theme file. What I want to achieve is, that a user can not easily modify the font sizes, to stick to the corporate design. So my technique  ... 
[beamer] [fontsize] [themes]
 

asked by TobiBS https://tex.stackexchange.com/landing/r/digest?cta=user&id=156791 1 vote