diff --git a/fize.sh b/fize.sh
index 6f20115..7bcd3a1 100755
--- a/fize.sh
+++ b/fize.sh
@@ -8,10 +8,14 @@ TREE="trees/$1.tree"
 sed -i '' -E 's/\$([^$]+)\$/#{\1}/g' $TREE
 # for the file $TREE, replace all string matching regrex \$\$\n([^$]+)\$\$ to ##{$1} where $1 is the first match using sed inplace
 cat $TREE | tr '\n' '\r' | sed -E 's/\$\$([^$]+)\$\$/##{\1}/g' > $TREE.tmp
-# for the file $TREE.tmp, replace all string matching \r(.*)\r\r to \r\p{\1}\r\r where $1 is the first match using sed inplace
-# sed -i '' -E 's/\r(.*)\r\r/\p{\r\1\r}\r\r/g' $TREE.tmp
-cat $TREE.tmp | tr '\r' '\n' > $TREE
-rm $TREE.tmp
+# 1. \texdef{}{}{ -> \refdef{}{}{\r\\p{
+sed -i '' -E 's/\\texdef\{([^\}]*)\}\{([^\}]*)\}\{/\\refdef\{\1\}\{\2\}\{\n\\p\{/g' $TREE.tmp
+# 2. before the line containing \refdef, skip; after the line, replace \r\r -> }\r\r\\p{ 
+awk 'BEGIN {skip=1} {if ($0 ~ /\\refdef/) {skip=0;print $0} else if (skip==1) {print $0} else { gsub(/\r\r/,"}\r\r\\p{", $0); print $0} }' $TREE.tmp > $TREE.tmp2
+# 3. }\s*$ -> }}
+sed -i '' -E 's/\}\s*$/\}\}\r/g' $TREE.tmp2
+cat $TREE.tmp2 | tr '\r' '\n' > $TREE
+rm $TREE.tmp*
 # for the file $TREE, replace all string \( to #{ using sed inplace
 sed -i '' -E 's/\\\(/#\{/g' $TREE
 # for the file $TREE, replace all string \) to } using sed inplace
diff --git a/trees/hopf-0002.tree b/trees/hopf-0002.tree
index c9e76ab..8768e4e 100644
--- a/trees/hopf-0002.tree
+++ b/trees/hopf-0002.tree
@@ -1,22 +1,24 @@
 \import{macros}
 \tag{hopf}
 
-\texdef{Peano space}{fauser2002treatise}{
-Let $V$ be a linear space of finite dimension $n$. Let lower case $x_i$ denote elements of $V$, which we will call also letters. We define a bracket as an alternating multilinear scalar valued function
-$$
+\refdef{Peano space}{fauser2002treatise}{
+\p{
+Let #{V} be a linear space of finite dimension #{n}. Let lower case #{x_i} denote elements of #{V}, which we will call also letters. We define a bracket as an alternating multilinear scalar valued function
+##{
 \begin{gathered}
 {[, \ldots, .]: V \times \ldots \times V \rightarrow \mathbb{k}} \\
 {\left[x_1, \ldots, x_n\right]=\operatorname{sign}(p)\left[x_{p(1)}, \ldots, x_{p(n)}\right]} \\
 {\left[x_1, \ldots, \alpha x_r+\beta y_r, \ldots, x_n\right]=\alpha\left[x_1, \ldots, x_r, \ldots, x_n\right]+\beta\left[x_1, \ldots, y_r, \ldots, x_n\right]}
 \end{gathered}
-$$
-$n$-factors
-$$
+}
+#{n}-factors
+##{
 \begin{aligned}
 {\left[x_1, \ldots, x_n\right] } & =\operatorname{sign}(p)\left[x_{p(1)}, \ldots, x_{p(n)}\right] \\
 {\left[x_1, \ldots, \alpha x_r+\beta y_r, \ldots, x_n\right] } & =\alpha\left[x_1, \ldots, x_r, \ldots, x_n\right]+\beta\left[x_1, \ldots, y_r, \ldots, x_n\right]
 \end{aligned}
-$$
+}}
+
+\p{The sign is due to the permutation #{p} on the arguments of the bracket. The pair #{\mathcal{P}=(V,[., \ldots,])}. is called a Peano space.
+}}
 
-The sign is due to the permutation $p$ on the arguments of the bracket. The pair $\mathcal{P}=(V,[., \ldots,])$. is called a Peano space.
-}
\ No newline at end of file
diff --git a/trees/hopf-0003.tree b/trees/hopf-0003.tree
index 7c2def9..3b7ec21 100644
--- a/trees/hopf-0003.tree
+++ b/trees/hopf-0003.tree
@@ -2,6 +2,7 @@
 \tag{hopf}
 
 \taxon{remark}
-\texnote{Peano space}{fauser2002treatise}{
-Of course, this structure is much weaker as e.g. a normed space or an inner product space. It does not allow to introduce the concept of length, distance or angle. Therefore it is clear that a geometry based on this structure cannot be metric. However, the bracket can be addressed as a volume form. Volume measurements are used e.g. in the analysis of chaotic systems and strange attractors.
+\refnote{Peano space}{fauser2002treatise}{
+\p{Of course, this structure is much weaker as e.g. a normed space or an inner product space. It does not allow to introduce the concept of length, distance or angle. Therefore it is clear that a geometry based on this structure cannot be metric. However, the bracket can be addressed as a volume form. Volume measurements are used e.g. in the analysis of chaotic systems and strange attractors.}
 }
+
diff --git a/trees/hopf-0004.tree b/trees/hopf-0004.tree
index 31c3ab2..2d0a4f2 100644
--- a/trees/hopf-0004.tree
+++ b/trees/hopf-0004.tree
@@ -1,11 +1,13 @@
 \import{macros}
 \tag{hopf}
 
-\texdef{standard Peano space}{fauser2002treatise}{
-A standard Peano space is a Peano space over the linear space $V$ of dimension $n$ whose bracket has the additional property that for every vector $x \in V$ there exist vectors $x_2, \ldots, x_n$ such that
-$$
+\refdef{standard Peano space}{fauser2002treatise}{
+\p{
+A standard Peano space is a Peano space over the linear space #{V} of dimension #{n} whose bracket has the additional property that for every vector #{x \in V} there exist vectors #{x_2, \ldots, x_n} such that
+##{
 \left[x, x_2, \ldots, x_n\right] \neq 0 .
-$$
+}}
+
+\p{In such a space the length of the bracket, i.e. the number of entries, equals the dimension of the space, and conversely. We will be concerned here with standard Peano spaces only.
+}}
 
-In such a space the length of the bracket, i.e. the number of entries, equals the dimension of the space, and conversely. We will be concerned here with standard Peano spaces only.
-}
\ No newline at end of file