Peaklist Panel
All labeled peaks are listed in Peaklist Panel [Config → Show Peaklist] . Application layout can be set either horizontal, with Peaklist Panel bottom, or vertical, with Peaklist Panel left [Config → Peaklist Bottom]
. Width or height of the panel can be set by divider dragging. Peaklist Panel not only shows labeled peaks but provides some tools for peaks editing too.
Peaks selection
To select peak simply click on the row in the list. In addition, Peaklist Panel offers some other possibilities, such as Select All, Select Annotated, Select by Treshold and Invert Selection available in panel context menu. Using Select by Treshold it is possible to select only the peaks below or above specified intensity treshold.
Add peak
To manually add a new peak to the list (not by using label functions of Mass Spectrum module) choose Add Peak [Peaklist → Add Peak…] . In the dialog you can specify m/z and Intensity values and some Annotations as well.

Add/edit peak dialog.
Edit peak
To edit an existing peak double-click the row in the list. In the dialog you can specify m/z and Intensity values and some Annotations as well.
Delete peak
To delete selected peaks choose Delete Selected Peaks from the panel context menu. To remove all peaks from document choose Delete All Peaks [Peaklist → Delete All Peaks] .
Clear annotations
By using some mMass tools, peaks can be annotated automatically. It is therefore important to have a possibility to clear previous or unwanted annotations. To clear annotations of selected peaks, in context menu choose Clear Selected Annotations. To erase all annotations choose Clear All Annotations [Peaklist → Clear All Annotations] .
Copy & export
It is often the case, that peaklist have to be copied to any of available web-based tools for another analysis. To copy selected peaks from the peaklist panel choose Copy to Clipboard from context menu or from main menu [Peaklist → Copy to Clipboard]. The peaklist data can be exported to file too. In application preferences you can specify which values to copy/export and ASCII delimiter as well.
Show peak in spectrum
To highlight selected peak in the spectrum choose Show Peak in Spectrum from the panel context menu. Spectrum is than moved to have the selected peak in the middle and marked by small triangle on x-axis.