The Editor Toolbar is a convenient way to access commonly used commands. Please see below for labelled close up of the Editor Toolbar. A description of each of its components follows:
1. Open File/Folder - Opens a new file, folder or recent message in a new tab. See Opening/Loading HL7 Messages for more details.
...
5. Search - In addition to the Quick Search functionality provided in the Navigation Bar, HL7Spy provides another, more robust search tool. See Search Messages for more details.
6. Sort - Allows messages within a Message Collection to be sorted by one or more HL7 fields, or by message size/offset. Changing the order of the messages in the Message Collection affects the order in which messages are used in other parts of the application such as HL7 Send, the Message Editor, etc. See Sort Messages for more details.
7. Merge Message Collections - Messages from multiple tabs can be merged together into a single tab using the “Merge Messages” dialog. See Merge Messages for more details.
...
14. Repeat Statistics - Provides the same functionality as Sub-Component Statistics, except the statistics are at the Repetition separator level instead of the Sub-Component level. This functionality can also be accessed by double-clicking on a Repetition separated section in the Message Editor, or by right-clicking a Repetition separated section in the Message Editor and selecting the “Repeat Statistics” menu option, or by selecting “Tools/Calculate Repeat Statistics” from the main menu. See Toolbar Statistics for more details.
15. Field Statistics - Provides the same functionality as Sub-Component Statistics, except the statistics are at the Field level instead of the Sub-Component level. This functionality can also be accessed by double-clicking on a Field in the Message Editor, by right-clicking a Field in the Message Editor and selecting the “Field Statistics” menu option, or by selecting “Tools/Calculate Field Statistics” from the main menu. See Toolbar Statistics for more details.
16. Advanced Statistics - Provides the same functionality as Allows you to be a bit more granular with your statistic results. You are given the option of the four above (Sub-Component Statistics, except the statistics are at the Field level instead of the Sub-Component level. This functionality can also be accessed by double-clicking on a Field in the Message Editor, by right-clicking a Field in the Message Editor and selecting the “Field Statistics” menu option, or by selecting “Tools/Calculate Field Statistics” from the main menu, Component, Repeat, or Field) and further filter options. See Toolbar Statistics for more details.
17. Add Watch - This button adds the field currently selected in the Message Editor window to the active Watch List. See Watch Window for more details.
18. Highlight Fields by Field Name - Use this feature to highlight a particular field by the name of the field. For instance, typing in “doctor” in the pop-up dialog will highlight all the doctor fields in the message, e.g. Attending Doctor, Referring Doctor, etc.
...
22. Message Properties/Hex Editor - displays Displays a hexadecimal display of the current message in the Message Editor as well as some information about it's character encoding, the file the message belongs to, the message offset and size, and whether it has been modified or not. See Message Properties for more details.
23. Show Messages Using Standard Encoding - HL7 allows messages to be encoded using characters other than the beloved |^~\& characters found in most HL7 Messages. Why anyone would use characters other than these is beyond understanding, however; the standard permits it. If you are used to seeing messages using the standard encoding characters, your brain gets used to viewing and automatically parsing this format. Switch the encoding characters and your brain suddenly has a very difficult time processing what it sees. Enabling this feature (the default), automatically displays any message using the default encoding. It does not change how the message is sent stored on disk, or how it is sent out via MLLP, just how it is displayed in the Message Editor.
24. Specify HL7 Message Vesion -Version - This allows you to specify the version of HL7 you are using, versions 2.1-2.7 are supported. You may also opt to have HL7Spy automatically detect the version for you.
25. Cut Current Message - Cuts the currently displayed message in the Message Editor, to the clipboard.
26. Copy Message To Clipboard - Copies the currently displayed message in the Message Editor, to the clipboard.
...
31. Send Current Message to Left Compare Window - Sends the current message to compare window on the left to find the differences between it and the message in the right compare window. See HL7 Compare for more details.
32. Send Current Message to Right Compare Window - Sends the current message to compare window on the right to find the differences between it and the message in the left compare window. See HL7 Compare for more details.
33. Show/Hide MainMenu - Allows you to show or hide the MainMenu shown to the right. 
34. Auto/Manual Message Load - This feature tries to automatically detect new messages every five seconds and load them into the Message Editor.