diff --git a/manual/tracy.tex b/manual/tracy.tex
index 7c6219bb..c4bfb014 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -2760,7 +2760,7 @@ This is pretty much the original source file view window, but with the ability t
 
 \paragraph{Assembly mode}
 
-This mode shows the disassembly of the symbol machine code. Each assembly instruction is displayed listed with its location in the program memory during execution. If the \emph{\faSearchLocation{}~Relative locations} option is selected, an offset from the symbol beginning will be printed instead.
+This mode shows the disassembly of the symbol machine code. Each assembly instruction is displayed listed with its location in the program memory during execution. If the \emph{\faSearchLocation{}~Relative locations} option is selected, an offset from the symbol beginning will be printed instead. Clicking the \LMB{}~left mouse button on the address/offset will switch to counting line numbers, using the selected one as origin (i.e. zero value). Line numbers are displayed inside \texttt{[]} brackets. This display mode can be useful to correlate lines with output of external tools, such as \texttt{llvm-mca}. To disable line numbering click the \RMB{}~right mouse button on a line number.
 
 If the \emph{\faFileImport{}~Source locations} option is selected, each line of the assembly code will also contain information about the originating source file name and line number. For easier differentiation between different source files, each file is assigned its own color. Clicking the \LMB{}~left mouse button on a displayed source location will switch the source file, if necessary, and focus the source view on selected line.