Table 1.

Results of survey 1, yes/no questions.

Number of question	Yes	No	Remarks
1	57.3%	42.7%
2	50.0%	50.0%	Used 1 or more than 1 feature
3	72.6%	27.4%
4	14.5%	85.5%
5	41.1%	58.9%
8	38.7%	61.3%
10	24.2%	75.8%
11	54.8%	45.2%
12	65.5%	34.5%
13	54.0%	46.0%
14	86.3%	13.7%
15	33,8%	66,2%