6.11.3 Can you answer these questions?

6.11.3.1 How to manipulate the header manually when using fancyhdr?
6.11.3.2 How to vertically center the text contained in merged table cells?
6.11.3.3 Find and replace in a document consisting of many 'included' files using \include
6.11.3.1 How to manipulate the header manually when using fancyhdr?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536001

I would like to manipulate my header inside a chapter. So for example I want to add something like "Test" to the header, which should only be displayed on that single page. 
I have tried to use  ... 
[header-footer]
 
asked by Nils https://tex.stackexchange.com/landing/r/digest?cta=user&id=211260 1 vote
6.11.3.2 How to vertically center the text contained in merged table cells?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536392

I've been struggling with a table for a while now, where I have three columns with some merged cells and I'd like to be able to center the text vertically (in columns 3 to 5) and make better usagee of  ... 
[tables] [horizontal-alignment] [rotating]
                                                                                  

                                                                                  
 
asked by Aradnix https://tex.stackexchange.com/landing/r/digest?cta=user&id=34027 1 vote
answered by leandriis https://tex.stackexchange.com/landing/r/digest?cta=user&id=134144 0 votes
6.11.3.3 Find and replace in a document consisting of many 'included' files using \include

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536232

I have parent(main) document which includes (through \include command) many (more then 100) small files. I want to use find and replace in all these latex files once (as it will take lots of time to  ... 
[texstudio] [include] [subfiles] [files] [find]
 
asked by Tash https://tex.stackexchange.com/landing/r/digest?cta=user&id=44006 1 vote