One interesting observation is that Delphi 1 copied the Word 6/Excel 4 "ctrl3d" UI style, but not quite exactly. Typical Delphi-ism are the Paradox-like (well,

One interesting observation is that Delphi 1 copied the Word 6/Excel 4 "ctrl3d" UI style, but not quite exactly. Typical Delphi-ism are the Paradox-like (well, duh) tabs on bottom edge of the window, which look good as long as the window isn't modal dialog (compare the tabs on code editor window and on the project settings dialog). And another more subtle, but sure signal of Delphi 1 application are the black borders inside text fields (and then also TBitBtn, but that is another thing which in the 3.1 days looked reasonable and not totally ugly as it does in anything after windows 95).