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This package, initially based on txfonts, provides many fixes and enhancements to the txfonts package, splitting it into two separate packages---newtxtext and newtxmath, which may be run independently of one another. It provides scaling, improved metrics, and other options. In particular, newtxmath offers a libertine option which substitutes Linux Libertine (provided with TeXLive and MikTeX) italic and Greek letters for the default Times letters, providing a good match for the Libertine text font, which is heavier than Computer Modern but lighter than Times, and in my experience, looks very sharp and clear on the screen.
-Current version: 1.624 2020-01-25
+Current version: 1.625 2020-03-02
This material is subject to the LaTeX Project Public License. See http://www.ctan.org/license/lppl1.3
for the details of that license.
+Changes in version 1.625
+1. Made some corrections to the subscript offsets in symbol fonts to provide better alignment of subscripts and superscripts.
+2. Reworked the dot positions for the five letters i, j, ij, iogonek and idotbelow, restoring the positions used in the original URW fonts and in commercial versions of Times, so that the top of the dot position aligns with the cap-height, allowing for curvature effects. (Thanks to Daniel Benjamin Miller for reporting this discrepancy.)
+3. Corrected a bug in newtxmath.sty handling of the choice between the three mathbb versions available and the resulting definition of \Bbbk. (Thanks again to Daniel Benjamin Miller who reported this error.)
+4. Added denominator figures in Regular weight only, and added a \textfrac macro that uses the superior and denominator figures to construct, e.g, seven eightieths using \textfrac{7}{80}. The denominator figures themselves are invoked by, e.g., \textin{345}.
+
Changes in version 1.624
Corrected problems with option varg in bold math italic and with the non-functional macros \varg, \varv, \varw, \vary. (Thanks Dave Green.)