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Annotation of 43BSDTahoe/usr.lib/learn/editor/L60.2c, revision 1.1.1.1

1.1       root        1: #print
                      2: You can use an address on the 'r' command to read input at a particular
                      3: location in the file.  Thus
                      4:   5r name
                      5: reads file "name" and appends its contents after line 5 of the file.
                      6: You can use any kind of address, including a search.  Here is a file "chem".
                      7: Find the line in file "chem" which contains the word "eight";
                      8: read the file "more" and append it after that line.  Then rewrite
                      9: "chem" and type "ready".
                     10: #create Ref
                     11:    When elements combine to form compounds, the electrons in the
                     12: outermost shell of the atoms are the only ones that take part in the
                     13: reaction.  These electrons are either transferred from the outer
                     14: shell of one atom to the outer shell of another, or, in some cases,
                     15: shared with the electrons in the outer shell of the second atom.
                     16:    Whether the electrons are transfered to the second atom or shared,
                     17: this atom completes its quota of eight electrons in the outer shell.
                     18:    An oxide is a compound containing oxygen and one other element.
                     19: The simplest of the oxides is H2O -- pure water, or hydrogen oxide.
                     20: Carbon dioxide is CO2 and is formed during the burning of organic
                     21: matter such as wood, paper, gasoline, or coal.  In the same burning
                     22: process, H2O is formed and energy is released, generally as heat,
                     23: sometimes as light.  Carbon dioxide is in the breath you just
                     24: exhaled.  This gas is given off by decaying plant and animal matter.
                     25: Decay is a burning process.
                     26:    Oxidation is a word that covers all the different ways things
                     27: burn.  When something oxidizes, it is burning.
                     28:    Compounds which are formed by the interchange of electrons are
                     29: called ionic compounds.  The ions formed are said to possess
                     30: electrovalence.
                     31: #create chem
                     32:    When elements combine to form compounds, the electrons in the
                     33: outermost shell of the atoms are the only ones that take part in the
                     34: reaction.  These electrons are either transferred from the outer
                     35: shell of one atom to the outer shell of another, or, in some cases,
                     36: shared with the electrons in the outer shell of the second atom.
                     37:    Whether the electrons are transfered to the second atom or shared,
                     38: this atom completes its quota of eight electrons in the outer shell.
                     39:    Compounds which are formed by the interchange of electrons are
                     40: called ionic compounds.  The ions formed are said to possess
                     41: electrovalence.
                     42: #create more
                     43:    An oxide is a compound containing oxygen and one other element.
                     44: The simplest of the oxides is H2O -- pure water, or hydrogen oxide.
                     45: Carbon dioxide is CO2 and is formed during the burning of organic
                     46: matter such as wood, paper, gasoline, or coal.  In the same burning
                     47: process, H2O is formed and energy is released, generally as heat,
                     48: sometimes as light.  Carbon dioxide is in the breath you just
                     49: exhaled.  This gas is given off by decaying plant and animal matter.
                     50: Decay is a burning process.
                     51:    Oxidation is a word that covers all the different ways things
                     52: burn.  When something oxidizes, it is burning.
                     53: #user
                     54: #cmp chem Ref
                     55: #log
                     56: #next
                     57: 60.2d 5

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