TiPL is a Persian type writer, with spell checker & predictive text, it shows both, the traditional (فارسی) & Latinised Persian text. TiPL uses a QWERTY keyboard, this makes it: 

1 A great tool for writing Persian, for users who are not too familiar with, or don't have access to, a Persian keyboard. 
2 An ideal complementary tool for learning Persian, for learners of any level. 

When required, TiPL will convert non-conforming 'Pinglish' words, to conforming versions (see help for more information).

TiPL (Type in Perso-Latin) is part of a suite of software tools, produced to enable Persian speakers use the Latin alphabet to write precise Persian by conforming to a convention (see TiPL's help for further information).

The Convention - Over the last 3 decades or so, many individuals, including TiPL's author, have tried to push for a more comprehensive & precise convention for writing Perso-Latin (PL). As a result, among the active followers, a quasi-convention has evolved. TiPL is built on an improved version of this ‘accepted’ convention.

TiPL consists of 3 panels; one at the top for entering & displaying PL text, the second, a non-editable panel for displaying Perso-Arabic(PA) i.e. Persian. The third displays suggestions based on user input(called the suggestion panel). For each word user enters, there will up to 4 suggestions, each of which is made of PL & PA parts. The suggestions can include the user’s word, if no match is found. PL words entered by user, automatically get converted to the aforementioned convention.

User can select a suggested word by; touching the word in the suggestions panel or, pressing space, in which case a 'best fit' word will be selected. The PL part of the selected word will replace user’s word, if it doesn't follow the convention, and the PA part is displayed in button panel.