1. A method for supporting input of one or more execution parameters of predetermined software in an input field, comprising: receiving input of a text character string including one or more execution parameters in the input field displayed on a display device; determining a selection type in response to a user selection of a part of the text character string; displaying on the display device one or more execution options of the execution parameters depending on the determined selection type, where a user can select one of the one or more execution options in response to a selection of a part of said text character string by the user, said one or more execution options displayed varying according to the type of selection of the part of said text character string; and in response to the user selection of a desired execution option, transforming said text character string to include the desired execution option selected and displaying the transformed text character string on the display device, wherein said predetermined software is a search engine, said text character string represents a search condition, and said execution options are search options for said search engine and wherein said search options include search field specification, wild card, fuzzy search, proximity search, range search, search term boosting, Boolean operator, grouping and field grouping.