If roll no. if filled incorrectly in the omr sheet in aieee. Can whitener be used to erase the worng bobble?

1) For those who would not understand, the question is about the "All India Engineering Entrance Examination" (AIEEE), which is done using OMR sheets. Further information: http://en.wikipedia.org/wiki/All_India_Engineering_Entrance_Examination (AIEEE) http://en.wikipedia.org/wiki/Optical_mark_recognition (OMR) 2) I found various information about this, but maybe the best would be to ask the organization which is doing the examination. This is about the AIEEE OMR forms: - "there is always an ink eraser in the exam centre you can correct the mistake done" http://answers.yahoo.com/question/index?qid=20110507022431AA5Elwu - "Query about mistake in OMR AIEEE form?": "then also if you have some queries regarding this,you can contact: The Assistant Secretary (AIEEE Unit) Central Board of Secondary Education PS 1-2, Institutional Area IP Extension, Patparganj, Delhi 110 092 Ph: 011-22239177-80 Extn. 110, 151, 157 011-22246095, 22246087 Fax: 011-22246095, 22235775" http://entrance-exam.net/forum/general-discussion/query-about-mistake-omr-aieee-form-2002.html This is about various other OMR forms: - "Avoid these points while filling OMR Sheets/OMR Forms: . Do not use whitener or blade to hide marks on OMR Sheet.": http://www.admengroup.com/OMR%20Sheet.htm - "Is Whitener allowed in IIT JEE application form?" http://entrance-exam.net/forum/general-discussion/whitener-allowed-iit-jee-application-form-56793.html