2. The method of claim 1 , further comprising: displaying the multi-line text fragment in a multi-line user-interface (UI) element, wherein the multi-line text fragment is rendered in the font type and the font size for display in the multi-line UI element, wherein the multi-line text fragment is excerpted from a text passage; and capturing a preliminary image of the individual multi-line text fragment as displayed in the multi-line UI element.
2. The method of claim 1 , further comprising: displaying the multi-line text fragment in a multi-line user-interface (UI) element, wherein the multi-line text fragment is rendered in the font type and the font size for display in the multi-line UI element, wherein the multi-line text fragment is excerpted from a text passage; and capturing a preliminary image of the individual multi-line text fragment as displayed in the multi-line UI element. 3. The method of claim 2 , further comprising: stitching together the training image by concatenating the preliminary image with images of at least a second multi-line text fragment excerpted from the text passage to form the training image.