When analyzing a large project I had to use the bookmarks feature, and I realised that two simple functionalities doesn't exist.
The line bookmarked don't appear highlighted, just a simple arrow shows up in the left margin. It's difficult to locate the bookmarked line just by scrolling the page or trying to take a rapid view on the code. This force us to use the shortcuts on the keyboard, and complicates a bit more the analysis.
When we exit Code::Blocks, reopen it, and reopen the project, the bookmarked lines are gone.
Pardon me if these already exists, I didn't found they anywhere in the Settings > Editor: Global Settings, Syntax Highlighting and similars.
My requests are: highlight of bookmarked lines and persistence of bookmarked lines beyond the exit of Code::Blocks.