diff --git a/lib/symbols b/lib/symbols
index e85be22976..0e82daaba2 100644
--- a/lib/symbols
+++ b/lib/symbols
@@ -395,72 +395,73 @@ lrcorner           msa         121   0 mathclose  ⌟
 rightleftharpoons  msa         173   0 mathrel  ⇋
 angle              msa          92 208 mathord  ∠
 hbar               msb         126   0 mathord  ℏ
-sqsubset           msa          64   0 mathrel  x
-sqsupset           msa          65   0 mathrel  x
-mho                msb         102   0 mathord  x
-square             msa         164   0 mathord  x
-Box                msa         164   0 mathord  x
-lozenge            msa         167   0 mathord  x
-Diamond            msa         167   0 mathord  x
-vartriangleright   msa          66   0 mathrel  x
-vartriangleleft    msa          67   0 mathrel  x
-trianglerighteq    msa          68   0 mathrel  x
-trianglelefteq     msa          69   0 mathrel  x
-rightsquigarrow    msa         195   0 mathrel  x
-leadsto            msa         195   0 mathrel  x
-lhd                msa          67   0 mathbin  x
-unlhd              msa          69   0 mathbin  x
-rhd                msa          66   0 mathbin  x
-unrhd              msa          68   0 mathbin  x
+sqsubset           msa          64   0 mathrel  ⊏
+sqsupset           msa          65   0 mathrel  ⊐
+mho                msb         102   0 mathord  ℧
+square             msa         164   0 mathord  □
+Box                msa         164   0 mathord  □
+lozenge            msa         167   0 mathord  ◊
+Diamond            msa         167   0 mathord  xdiam;
+vartriangleright   msa          66   0 mathrel  ▹
+vartriangleleft    msa          67   0 mathrel  ◃
+trianglerighteq    msa          68   0 mathrel  ⊵
+trianglelefteq     msa          69   0 mathrel  ⊴
+rightsquigarrow    msa         195   0 mathrel  ↝
+# This may not be right, but is the closest I can find.
+leadsto            msa         195   0 mathrel  ⤳
+lhd                msa          67   0 mathbin  ◃
+unlhd              msa          69   0 mathbin  ⊴
+rhd                msa          66   0 mathbin  ▹
+unrhd              msa          68   0 mathbin  ⊵
 
 # Generated from amssymb.sty
 
-boxdot             msa         161   0 mathbin  x
-boxplus            msa         162   0 mathbin  x
-boxtimes           msa         163   0 mathbin  x
-blacksquare        msa         165   0 mathord  x
-centerdot          msa         166   0 mathbin  x
-blacklozenge       msa         168   0 mathord  x
-circlearrowright   msa         169   0 mathrel  x
-circlearrowleft    msa         170   0 mathrel  x
-leftrightharpoons  msa         174   0 mathrel  x
-boxminus           msa         175   0 mathbin  x
-Vdash              msa         176   0 mathrel  x
-Vvdash             msa         177   0 mathrel  x
-vDash              msa         178   0 mathrel  x
-twoheadrightarrow  msa         179   0 mathrel  x
-twoheadleftarrow   msa         180   0 mathrel  x
-leftleftarrows     msa         181   0 mathrel  x
-rightrightarrows   msa         182   0 mathrel  x
-upuparrows         msa         183   0 mathrel  x
-downdownarrows     msa         184   0 mathrel  x
-upharpoonright     msa         185   0 mathrel  x
-restriction        msa         185   0 mathrel  x
-downharpoonright   msa         186   0 mathrel  x
-upharpoonleft      msa         187   0 mathrel  x
-downharpoonleft    msa         188   0 mathrel  x
-rightarrowtail     msa         189   0 mathrel  x
-leftarrowtail      msa         190   0 mathrel  x
-leftrightarrows    msa         191   0 mathrel  x
-rightleftarrows    msa         192   0 mathrel  x
-Lsh                msa         193   0 mathrel  x
-Rsh                msa         194   0 mathrel  x
-leftrightsquigarrow msa         33   0 mathrel  x
-looparrowleft      msa          34   0 mathrel  x
-looparrowright     msa          35   0 mathrel  x
-circeq             msa          36   0 mathrel  x
-succsim            msa          37   0 mathrel  x
-gtrsim             msa          38   0 mathrel  x
-gtrapprox          msa          39   0 mathrel  x
-multimap           msa          40   0 mathrel  x
-therefore          msa          41  92 mathrel  x
-because            msa          42   0 mathrel  x
-doteqdot           msa          43   0 mathrel  x
-Doteq              msa          43   0 mathrel  x
-triangleq          msa          44   0 mathrel  x
-precsim            msa          45   0 mathrel  x
-lesssim            msa          46   0 mathrel  x
-lessapprox         msa          47   0 mathrel  x
+boxdot             msa         161   0 mathbin  ⊡
+boxplus            msa         162   0 mathbin  ⊞
+boxtimes           msa         163   0 mathbin  ⊠
+blacksquare        msa         165   0 mathord  █
+centerdot          msa         166   0 mathbin  ▪
+blacklozenge       msa         168   0 mathord  ♦
+circlearrowright   msa         169   0 mathrel  ↻
+circlearrowleft    msa         170   0 mathrel  ↺
+leftrightharpoons  msa         174   0 mathrel  ⇋
+boxminus           msa         175   0 mathbin  ⊟
+Vdash              msa         176   0 mathrel  ⊩
+Vvdash             msa         177   0 mathrel  ⊪
+vDash              msa         178   0 mathrel  ⊨
+twoheadrightarrow  msa         179   0 mathrel  ↠
+twoheadleftarrow   msa         180   0 mathrel  ↞
+leftleftarrows     msa         181   0 mathrel  ⇇
+rightrightarrows   msa         182   0 mathrel  ⇉
+upuparrows         msa         183   0 mathrel  ⇈
+downdownarrows     msa         184   0 mathrel  ⇊
+upharpoonright     msa         185   0 mathrel  ↾
+restriction        msa         185   0 mathrel  ↾
+downharpoonright   msa         186   0 mathrel  ⇂
+upharpoonleft      msa         187   0 mathrel  ↿
+downharpoonleft    msa         188   0 mathrel  ⇃
+rightarrowtail     msa         189   0 mathrel  ↣
+leftarrowtail      msa         190   0 mathrel  ↢
+leftrightarrows    msa         191   0 mathrel  ⇆
+rightleftarrows    msa         192   0 mathrel  ⇄
+Lsh                msa         193   0 mathrel  ↰
+Rsh                msa         194   0 mathrel  ↱
+leftrightsquigarrow msa         33   0 mathrel  ↭
+looparrowleft      msa          34   0 mathrel  ↫
+looparrowright     msa          35   0 mathrel  ↬
+circeq             msa          36   0 mathrel  ≗
+succsim            msa          37   0 mathrel  ≿
+gtrsim             msa          38   0 mathrel  ≳
+gtrapprox          msa          39   0 mathrel  ⪆
+multimap           msa          40   0 mathrel  ⊸
+therefore          msa          41  92 mathrel  ∴
+because            msa          42   0 mathrel  ∵
+doteqdot           msa          43   0 mathrel  ≑
+Doteq              msa          43   0 mathrel  ≑
+triangleq          msa          44   0 mathrel  ≜
+precsim            msa          45   0 mathrel  ≾
+lesssim            msa          46   0 mathrel  ≲
+lessapprox         msa          47   0 mathrel  ⪅
 eqslantless        msa          48   0 mathrel  x
 eqslantgtr         msa          49   0 mathrel  x
 curlyeqprec        msa          50   0 mathrel  x