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Introduction
Most objects in the IGB display can be selected by clicking on them. These include annotations, graphs and sequence regions in order to perform certain operations on them. To select items, choose the pointer tool: 
, results from search sequence, and entire tracks.
When an item is selected, IGB draws a red box around it.
IGB also supports selecting and deselecting more than one item at once.
How to select an item (or items) in IGB
To select items, click the pointer icon to activate the selection tool: 
The following are ways to select items in the viewer Main View window using the pointer toolselection tool; selections are outlined in red.
To do this: | Do this: | |||||
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Select a single annotation or feature. | Click on it. | |||||
Select an entire a multi-exon gene model instead of an exon. Directly select a whole gene by clicking on the line connecting the exons. If you mistakenly select an exon instead of a gene, right-click in the blank background or on a selected annotation | Click a line connecting exons or on the label (if active). | |||||
Select a single-exon gene model | Click an exon, right-click and choose Select parent. | |||||
Select a single graph. | Click on its handle - the rectangle at the left inside the main view window. | |||||
Select an entire annotation track. | Click on its track label in the left-hand panel. | |||||
Select multiple annotations or graphs. | Drag the mouse through a region to select all enclosed items. For graphs, the drag should include the graph handle. A drag must begin in the empty area, not on top of any annotation or in the coordinates track.You can use shift-click or shift-drag to select additional items. Tip: Add to the current selection | SHIFT-click to add individual items or shift and drag to add multiple items. | ||||
Select multiple items in the display | Click-drag the mouse over all items you wish to select. Start the drag in an empty area. SHIFT-click or SHIFT-drag to add to current selection.
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Deselect 1 item from a group selection. | Type SHIFT+CNTRL and click the item you want to de-select | |||||
Select a sequence region. | Drag along the axis of the coordinates track to select a set of genomic residues. Click-drag over the sequence bases you want to select. To select residues, the drag must begin dragging in the axis tier. | |||||
Deselect everything. | Click the an empty background space region anywhere in the viewer window. | |||||
Add to the current selection | Shift-click to add individual items or shift and drag to add multiple items. | |||||
Open a pop-up menu |
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Highlighting matching endpoints
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main view. | |
Select a floating graph. | Click its handle - the rectangle at the left inside the data display area |
Select an entire annotation track. | Click its track label in the left-hand panel. |
Selecting items activates edge matching
When you select items in the display, the edges of the selected item and all other items with identical edges are highlighted.
This feature helps in comparing splice variation, exon length, read location, etc.
You can change the edge match color or turn it off. See Other Options.