41. Rational Software Modeler is based on the UML for creating applications and web services. 42. A pioneer modeler in On2 was Allan Hanson. 43. IBM SPSS Modeler was originally named Clementine by its creators, Integral Solutions Limited. 44. The modeler can in other nodes stay at a brief level with less dynamics. 45. These types can be extended by the modeler . 46. It takes experience, practice and brain power to be a good mathematical modeler . 47. Like many modelers , Posey's love for trains springs from the real thing. 48. Data modelers can use " feature types " to create a hierarchical structure. 49. A simplified Python system was made available for the Modeler environment and for common functions. 50. For the serious military modeler this opens a new realm of possibilities in diorama making.