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MathFlow licensing
Reading time: 2minOverview
MathFlow requires access to a license file in order to function. There are 3 types of MathFlow licenses: Evaluation, Fixed and Concurrent (or Floating). Depending on the type of license, the license file may be located on the same machine where MathFlow is running, or it may be accessed via a central license server on a network.
Evaluation license
A MathFlow Evaluation license expires on a specific date determined when we generate the license. This type of license is most commonly used for demonstrations and evaluations of the product.
To request a MathFlow evaluation license, contact our sales staff. You will need to provide the operating system (version of Windows) of the machine where you intend to run the evaluation. Once you have obtained the license file, place it in
<custom-path>/lib/mathflow
in your MathFlow installation. You will then be able to try MathFlow for a period of 30 days. To check on the expiration of this evaluation license, use the About MathFlow Editor entry on the Help menu in the MathFlow Editor or the About MathFlow entry on thee MathFlow menu in the Arbortext Editor.
Permanent licenses
After you purchase MathFlow, we will issue a permanent license. Permanent in this case doesn't mean it never expires; it means it's not an evaluation license. If you don't get your permanent license, please contact our sales staff.
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<custom-path>\lib\mathflow\resources\windows\lmhostid.exe
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<custom-path>\lib\mathflow
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<custom-dir>/lib/dll/lmgr11.dll<custom-dir>/lib/mathflow/resources/windows/64bitDLL/
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<custom‑path>\lib\mathflow\resources\windows\lmhostid.exe
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<custom‑path>\lib\mathflow
C:\flexnet> lmgrd -c dessci.lic -L [+]debug_log_path
lmgrd -c dessci.lic -L [+]debug_log_path
su username -c "lmgrd -c license_file_list -l debug_log_path"
/etc/rc.boot /etc/rc.local /etc/rc2.d/Sxxx /sbin/rc2.d/Sxxxx
su username -c “umask 022; lmgrd -c license-path -l log”
License check-out and check-in
Checking the license out
A MathFlow Editor license is checked out when you use the MathFlow Editor in a document. This allows you to view an XML document containing MathML without checking out a license.
If the license has not been checked out, the equation will appear with a gray background. 
There are three actions that will cause the MathFlow Editor to check out a license:
- Insert MathML (Insert Equation)
- Edit an existing equation
- Reload MathML Images
Once a license has been checked out, the gray background will disappear. 
If a license has been checked out, it is checked out for all documents open in Arbortext which contain MathML. Some documents may show gray equation images, but that will change if the view is refreshed. Therefore a document having gray equation images will not be a true indicator of whether or not a license is indeed checked out.
A MathFlow Editor license is also checked out when MathFlow Import/Export and Composer are used.
Checking the license in
There are two ways to check in a license, releasing it for others to use:
- Close all documents open in Arbortext which contain MathML
- Close Arbortext