title: How to organize a chunk of text in different lines without using print?
body: <p>So I have this function to create a piece of text and I want each of the "paste" functions inside the main one to be in different lines, I tried using sep="\n" and collapse="\n" but it's not working</p>
  
  <pre><code>summary_library=function(taxon19){
    paste(paste("Number of specimens with A grade:",as.numeric(length(which(taxon19$grade=="A")))," ","Percentage:",signif((as.numeric(length(which(taxon19$grade=="A"))*100)/length(taxon19$species)),digits=3),"%"),
    paste("Number of specimens with B grade:",as.numeric(length(which(taxon19$grade=="B")))," ","Percentage:",signif((as.numeric(length(which(taxon19$grade=="B"))*100)/length(taxon19$species)),digits=3),"%"),
    paste("Number of specimens with C grade:",as.numeric(length(which(taxon19$grade=="C")))," ","Percentage:",signif((as.numeric(length(which(taxon19$grade=="C"))*100)/length(taxon19$species)),digits=3),"%"),
    paste("Number of specimens with D grade:",as.numeric(length(which(taxon19$grade=="D")))," ","Percentage:",signif((as.numeric(length(which(taxon19$grade=="D"))*100)/length(taxon19$species)),digits=3),"%"),
    paste("Number of specimens with E grade:",as.numeric(length(which(taxon19$grade=="E")))," ","Percentage:",signif((as.numeric(length(which(taxon19$grade=="E"))*100)/length(taxon19$species)),digits=3),"%"),
    paste("Number of different species:",length(unique(taxon19$species))),
    paste("Number of different BIN numbers:",length(unique(taxon19$BIN))),
    paste("Number of different collectors:",length(unique(taxon19$collectors))),
    paste("Number of different countries:",length(unique(taxon19$country)),collapse="\n"),
    paste("Total Number of specimens in reference library:",length(taxon19$species),collapse="\n"),sep="\t")
  }
  </code></pre>
  
  <p>Currently the text appears like this:</p>
  
  <pre><code>Number of specimens with A grade: 166 Percentage: 60.8 %    Number of specimens with B grade: 3 Percentage: 1.1 %   Number of specimens with C grade: 85 Percentage: 31.1 % Number of specimens with D grade: 19 Percentage: 6.96 % Number of specimens with E grade: 0 Percentage: 0 % Number of different species: 24 Number of different BIN numbers: 28 Number of different collectors: 51  Number of different countries: 22   Total Number of specimens in reference library: 273
  </code></pre>
  
  <p>I wanted something like this:</p>
  
  <pre><code>Number of specimens with A grade: 166 Percentage: 60.8 %    
  Number of specimens with B grade: 3 Percentage: 1.1 %   
  Number of specimens with C grade: 85 Percentage: 31.1 % 
  Number of specimens with D grade: 19 Percentage: 6.96 % 
  Number of specimens with E grade: 0 Percentage: 0 % 
  Number of different species: 24 
  Number of different BIN numbers: 28 
  Number of different collectors: 51  
  Number of different countries: 22   
  Total Number of specimens in reference library: 273
  </code></pre>
  
  <p>Thanks for any response in advance</p>