The GLAD program contains powerful features to model beam trains, stable and unstable resonators,photonic devices, and most other optical systems. All products come with one year of technical support and one year of warranty from the date of invoice. Code Name Price   56D Free Full Function Demo CD of GLAD Pro Ver. 5.5 $0.00 56P64 GLAD Pro Ver. 5.6, 64 bit* $6,300.00 56P64C GLAD Pro 5.6, 64 bit plus 3-day course* $7,260.00 56P GLAD Ver. 5.6* $4,900.00 56PC GLAD Pro 5.6 plus 3-day course* $5,860.00 56U5 Upgrade GLAD from Ver. 5.5 to Ver. 5.6 $1,200.00 56U4 Upgrade GLAD from Ver. 5.4 to Ver. 5.6 $1,800.00 56U3 Upgrade GLAD from Ver. 5.3 to Ver. 5.6 $2,500.00 55U2 Upgrade GLAD from Ver. 5.2 to Ver. 5.6 $3,000.00 TSUE Technical support and upgrade extension while currently under within the support period $1,100.00 56UP Upgrade from GLAD Pro to GLAD Pro 64 bit $1,400.00 56CUS GLAD 3-day course, San Diego, CA., Oct. 6-8, 2011 $1,200.00 56CCH GLAD 3-day course, Beijing, China, Aug. 10-12. $1,200.00 56M Extra set of both Theory and Commands Manuals $120.00 56ME Printed copy of Examples Manual $165.00 * 20% discount on any other items purchased on the same purchase order with a new purchase of GLAD Pro Ver. 5.0 (50NP).