First way: Select the multiple lines which you want to comment using the cursor and then use the key combination "control + shift + C" to comment or uncomment the selected lines. 4.17 Comment out text. 4.18 Omit a heading in the table of contents. 4.19 Put together all code in the appendix (*) 4.20 Manipulate Markdown via Pandoc Lua filters (*) 5 Formatting. 5.1 Font color. 5.1.1 Using an R function to write raw HTML or LaTeX code. 5.1.2 Using a Pandoc Lua filter (*) 5.2 Indent text. ```{r intro-option, eval = FALSE} # this is a comment. Text, next to a comment, is not processed by R # comments will appear on your rendered r markdown document 1+2 ``` One example of using eval = FALSE is for a code chunk that exports a file such as a figure graphic or a text file.
In RStudio an easy way to do this is to write your comment and once you have used CTRL + Shift + C to comment your line of code, then use CTRL + SHIFT + / to reflow you comment onto multiple lines for ease of reading. Yes, you can comment out several lines at once by selecting them and pressing Ctrl-/ (slash) (command-/ on a Mac). If you're familiar with vi or vim editors, you can also enable vi editor mode on Overleaf and use the standard vi commands for commenting. Finally, if you'd like to add a block comment in the source you can also use the comment package to comment out large sections of text.
For example, if you're working with a PHP script, you might see a section like the one below: /* This section is commented out by default to avoid causing problems. To enable feature X, uncomment the section below. Line of php code. Instead of \includecomment {mysection} one could also use \specialcomment {mysection} {<before code>} {<after code>} to enable a comment section: There are other ways to solve this problem than via (La)TeX. You can use your editor's capabilities for commenting to comment out large sections.
A common practice is to use comment lines enclosed in some kind of band, or box of display characters. As several commenters pointed out, for inline commenting <!-- a normal html comment --> now works. Btw, wow, I created this gist in 2014 and only now became aware of the discussion and that it's the top Google hit for markdown comments github. This comment has been minimized. This comment has been minimized. Example 1: Commenting Out Using Keyboard Shortcut This Example explains how to comment out an entire block of code by putting hashtags in front of each line of the code. To do this quickly, we first have to highlight the code we want to get rid of and then we have to use the keyboard shortcut Control + Shift + c.
Go to code > comment/uncomment lines (see the screenshot) click then your code is commented or uncommented There is also a short cut for this; so, after selecting your code you can just click Ctrl + shift + C and voilà. Your code is commented.
Is there a way in R to comment whole block of code at once like we do in C++ using /* and */ symbols? Thanks. Ramesh_Ramachandran June 25, 2015, 6:30am #2. Inside a function one can use "[Comments]" i.e apostrophe to enclose multiline comments. The default editors use something like command or control and single quote to comment out selected lines of code. In RStudio it's Command or Control + /. Check in your editor. It's still commenting line by line, but they also uncomment selected lines as well.