Spectral trees can be manually created and edited in Database Manager in the Spectral Tree pane. All editing actions are accessible from the pane buttons and from the pop-up menu that is displayed by right clicking the mouse button.

Note: All actions described below are only applied to the selected node or spectrum.

You may want to construct a tree from scratch. You can start creating an empty tree framework by adding new nodes and then successively pasting/importing spectra into the nodes. To add a new node, right click on the parent node and choose the Add | Add Node pop-up menu item. An empty node can be filled with a spectrum from the clipboard or can be imported from a file. Simply, right click on the node and choose the Paste | Paste Parallel Spectrum menu item. This item is displayed if clipboard contains a spectrum. To add another empty node product spectrum (parallel spectrum) right click on the node and choose Add | Add Parallel Spectrum. A node can only contain one empty parallel spectrum. If you add more than one parallel spectrum to the node, the software automatically generates the average and composite parallel spectra, which are differentiated by color. If you import a *.raw file into the node, the program calculates the average spectrum from all scans. And so you should not import a chromatogram *.raw file into a spectrum node. To create a node with a chromatogram, you must paste a data reduced chromatogram from the Chromatogram Processor window.

A tree would be incomplete without precursor m/z values and the isolation width of the product nodes. There are two ways to define the precursor m/z value. Either manually type the value in the edit box in the Structure pane or paste or draw the ionic product fragment into the Structure pane and click the Restore Precursor m/z    button in the bottom right corner of the Structure pane. The default value of the isolation width is determined automatically, but it can be manually changed in the edit box in brackets.

The node caption of every parallel spectrum or chromatogram can be edited by double clicking on the caption and entering the new formatted text into the annotation dialog box.

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